Article
Geosciences, Multidisciplinary
Yifan Fan, Shikuan Zhang, Yonghui Huang, Zhonghe Pang, Hongyan Li
Summary: Recoverable geothermal resources are vital for geothermal development and utilization. This study proposes a numerical modeling method to calculate recoverable resources considering sustainability, and demonstrates its effectiveness using a geothermal reservoir as an example. The results show that well spacing has an impact on recoverable resources and the proposed method improves the recovery factor.
FRONTIERS IN EARTH SCIENCE
(2022)
Article
Engineering, Civil
Pengcheng Yuan, Shenchun Xu, Jian Liu, Yu Su, Chengqing Wu
Summary: In recent years, increasing attention has been paid to blast mitigation of structures while keeping their adequate functions. This study developed an innovative multi-layer sandwich wall to provide blast mitigation for protective structures. The blast behavior of the multi-layer sandwich walls was investigated experimentally and numerically, and the findings indicated excellent anti-blast performance and the significant influence of the rear G-HPC layer on the performance.
ENGINEERING STRUCTURES
(2023)
Article
Energy & Fuels
Ade Lesmana, Heru Berian Pratama, Ali Ashat, Nenny Miryani Saptadji
Summary: Numerical reservoir simulation is an essential tool for evaluating geothermal energy development strategies. A case study conducted in North Sulawesi, Indonesia, showed that a stepwise development approach can reduce the required number of reinjection and make-up wells.
Article
Energy & Fuels
He Sun, Burak Firat, Wei Yu, Paul Bommer, Kamy Sepehrnoori, Erdinc Senturk, Mahmut Kaan Tuzen
Summary: The thermal embedded discrete fracture model is used to analyze the thermal behavior in complex fracture networks. The analysis shows that in geothermal reservoirs with high permeability, the improvement in system performance and efficiency is minimal even with high density natural fracture networks. Well placement is crucial for circulation efficiency.
Article
Energy & Fuels
Yang Yang, Bin Xiong, Sanxi Peng, Hanbo Chen, Tianyu Zhang, Lu Liu
Summary: Geothermal resources are important renewable energy sources with high development potential, but their exploitation involves significant hazards. Geophysical methods, such as TEM and CSAMT, are effective and accurate in determining the depth and location of geothermal resources. This study establishes a simplified geothermal system resistivity model and simulates the abilities of TEM and CSAMT in distinguishing target faults with different resistivities, dip angles, and widths. The effectiveness of these methods in exploring geothermal resources is demonstrated through a case study in Huairen County, Shanxi Province, China.
PETROLEUM SCIENCE AND TECHNOLOGY
(2023)
Article
Energy & Fuels
Francesco Cecinato, Diana Salciarini
Summary: This study investigates the impact of key parameters on the thermal efficiency of energy micro-piles (EMPs) using numerical simulations and statistical analysis. The results show that the design criteria and important parameters for EMPs differ from those of standard energy piles (EPs).
GEOMECHANICS FOR ENERGY AND THE ENVIRONMENT
(2022)
Article
Energy & Fuels
Bahman Bagha Dashtaki, Gholam Reza Lashkaripour, Mohammad Ghafoori, Naser Hafezi Moghaddas
Summary: The study investigated casing collapse in an Iranian offshore oilfield in the Persian Gulf. By modeling collapse loading under different conditions, a mechanical earth model was established to determine in-situ stresses and rock mechanical properties, considering interactions between different media and joint properties. Results showed that marl and salt with overpressure pose a high risk for casing collapse, indicating the need for coupled data from mechanical earth modeling and numerical analysis to determine maximum lithostatic pressure on the casing.
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
(2021)
Article
Engineering, Environmental
Filippo Torresan, Leonardo Piccinini, Mauro Cacace, Marco Pola, Dario Zampieri, Paolo Fabbri
Summary: Renewable natural resources are crucial for reducing environmental pollution and protecting the environment, with a focus on the renewability assessment of geothermal resources which includes considerations of hydrogeology and system development control. Attention should also be paid to the sustainable exploitation of resources to avoid overexploitation.
ENVIRONMENTAL GEOCHEMISTRY AND HEALTH
(2022)
Article
Engineering, Mechanical
A. Quacquarelli, G. Mollon, T. Commeau, N. Fillot
Summary: The study presents a multiscale model to predict the wear of metallic surface in Diamond Impregnated Tools, taking into account the tribological interactions involved. By treating the slurry as an equivalent fluid and discretizing wear at different scales, a wear equation considering various factors is derived. Experimental validation shows promising results for predicting wear rates in similar tribological situations.
Article
Thermodynamics
Manojkumar Gudala, Suresh Kumar Govindarajan, Bicheng Yan, Shuyu Sun
Summary: This study proposes an improved mathematical model to investigate the temperature variations and mechanical strain in the Puga geothermal reservoir. It is found that there are low-temperature regions within the fractures, and the number of hydraulic fractures and well patterns significantly influence the rock and fluid properties. The proposed mathematical model can effectively evaluate and predict the changes in the reservoir.
Article
Engineering, Civil
Leyner Cardenas-Mercado, Jorge Escobar-Vargas, Jhonny I. Perez-Montiel, Andres Torres
Summary: This study proposes a method for optimizing the calibration process of flood models using socio-hydrological variables. By comparing the results with traditional methods, incorporating socio-hydrological variables can improve the accuracy of flood simulations.
JOURNAL OF HYDROLOGY
(2023)
Article
Energy & Fuels
Ahmad Aljabr, Andrew Chiasson, Amr Alhajjaji
Summary: This study investigates the effects of adding micro-encapsulated, paraffin-based phase-change material (PCM) into the borehole grout of a vertical borehole heat exchanger used in ground-coupled heat pump systems. The results show that careful selection of PCM thermal properties and melt temperature is crucial to avoid adverse effects on the system performance.
Article
Energy & Fuels
Mirmahdi Seyedrahimi-Niaraq, Saeid Mohammadzadeh Bina, Ryuichi Itoi
Summary: This paper presents a new estimate of the power production capacity of the NW Sabalan reservoir based on recent field data, using an improved three-dimensional numerical model. The model was validated and determined that the main factors controlling production capacity in the area are the expected pressure drop and the enthalpy of the produced fluid.
Article
Engineering, Chemical
Yuchao Zeng, Fangdi Sun, Haizhen Zhai
Summary: The spacing of fractures has a significant impact on the simulation results when using the equivalent porous media method to model geothermal reservoirs. When the fracture spacing is between 25-300 meters, using the EPM method to simulate fractured reservoirs may lead to unreasonable results.
Article
Energy & Fuels
Abdek Hassan Aden, Jasmin Raymond, Bernard Giroux
Summary: The study focuses on the hydrothermal fluid circulation in the Asal Rift and the impact of subsurface anisotropy on fluid flow. The numerical simulations demonstrate that fault zones act as recharge/discharge areas and magmatic fluid release affects the hydrological behavior of fault zones. The findings provide a better understanding of the fluid circulation in the Asal Rift.
Article
Environmental Sciences
Francesca Pace, Anna Marti, Pilar Queralt, Alessandro Santilano, Adele Manzella, Juanjo Ledo, Alberto Godio
Summary: This study investigates the geoelectrical features of the Travale geothermal field in Italy using three-dimensional magnetotelluric data inversion. It presents the first resistivity model of the field and reveals the presence of deep elongated resistive bodies correlated with strike-slip tectonics. The findings provide new insights into the complex geothermal system of Travale.
Article
Computer Science, Interdisciplinary Applications
Octavio Castillo-Reyes, David Modesto, Pilar Queralt, Alex Marcuello, Juanjo Ledo, Adrian Amor-Martin, Josep de la Puente, Luis Emilio Garcia-Castillo
Summary: This paper presents a routine for 3D magnetotelluric (MT) modeling using high-order edge finite element method (HEFEM), tailored and unstructured tetrahedral meshes, and high-performance computing (HPC). The accuracy, robustness, and performance of the code are evaluated using reference models developed by the MT community. The results show that the new algorithm can generate expected solutions for 3D MT models and provide insights on the effectiveness of high-order discretizations, tailored mesh design, and the use of HEFEM, tailored meshes, and HPC for solving realistic and complex 3D MT models.
COMPUTERS & GEOSCIENCES
(2022)
Article
Biology
Isaac Casanovas-Vilar, Miguel Garces, Alex Marcuello, Juan Abella, Joan Madurell-Malapeira, Silvia Jovells-Vaque, Lluis Cabrera, Jordi Galindo, Elisabet Beamud, Juan Jose Ledo, Pilar Queralt, Anna Marti, Josep Sanjuan, Carles Martin-Closas, Gonzalo Jimenez-Moreno, Angel H. Lujan, Andrea Villa, Daniel DeMiguel, Israel M. Sanchez, Josep M. Robles, Marc Furio, Lars W. Van den Hoek Ostende, Antonio Sanchez-Marco, Oscar Sanisidro, Alberto Valenciano, Israel Garcia-Paredes, Chiara Angelone, Guillem Pons-Monjo, Beatriz Azanza, Massimo Delfino, Arnau Bolet, Montserrat Grau-Camats, Victor Vizcaino-Varo, David Mormeneo, Yuri Kimura, Salvador Moya-Sola, David M. Alba
Summary: Els Casots is one of the richest fossil vertebrate sites in Catalonia, Spain, providing valuable insights into the wetland ecosystems during the Miocene Climatic Optimum. The site, dating back to approximately 15.9 million years ago, showcases a diverse range of vertebrate species, including amphibians, reptiles, birds, and mammals. The well-preserved fossils, along with detailed stratigraphic and palaeoenvironmental data, contribute to a comprehensive understanding of the site and its significance in southern Europe during the MCO.
HISTORICAL BIOLOGY
(2022)
Article
Energy & Fuels
Ivan Cabrera-Perez, Jean Soubestre, Luca D'Auria, David Martinez van Dorth, Juanjo Ledo, Perla Pina-Varas, German Cervigon-Tomico, German D. Padilla, Jose Barrancos, Nemesio M. Perez
Summary: This study used Ambient Noise Tomography (ANT) for the first time on Gran Canaria island to analyze the geological structures and geothermal potential. The findings revealed five velocity anomalies related to the island's geology and geothermal potential. Two high-velocity anomalies in the central part of the island were interpreted as intrusive volcanic bodies from the island's early stages. Three low-velocity zones were identified, potentially associated with recent volcanic activity. The study also observed a spatial correlation between anomalies in electrical conductivity and lateral gradients in the S-wave velocity model, providing evidence of hydrothermal circulation and thermal anomalies.
Article
Geochemistry & Geophysics
Beatriz Benjumea, Anna Gabas, Albert Macau, Fabian Bellmunt, Juanjo Ledo, Jordi Ripoll, Sara Figueras
Summary: This study utilizes electrical resistivity and seismic methods to characterize lithology and assess geomechanical parameters, which are crucial for dealing with uncertainty in infrastructure planning and damage diagnosis.
NEAR SURFACE GEOPHYSICS
(2023)
Article
Multidisciplinary Sciences
P. Pina-Varas, J. Ledo, P. Queralt, D. Martinez van Dorth, A. Marcuello, I. Cabrera-Perez, L. D'Auria, A. Marti
Summary: This study investigated the changes in resistivity following the volcanic eruption on the island of La Palma using long-period magnetotelluric (MT) monitoring. The obtained dataset and new 3D resistivity models revealed the evolution of fluid pathways underground and provided new insights into volcanic monitoring and hazard mitigation.
SCIENTIFIC REPORTS
(2023)
Article
Geology
Perla Pina-Varas, Juanjo Ledo, Pilar Queralt, Alex Marcuello, Gemma Mitjanas, David Martinez Van Dorth
Summary: There is a growing interest in geothermal energy, and the magnetotelluric (MT) method is commonly used in exploration due to its ability to detect deep reservoirs. In the Canary Islands, MT has been applied for a decade and has shown promising results.
BOLETIN GEOLOGICO Y MINERO
(2023)
